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IGF-1 LR3 100mcg lyophilised research vial, 99% purity

Specification

Purity>99% (HPLC + MS)
FormLyophilised powder
Box10 sealed vials
SourceSweden
Storage-20 °C, dark, sealed
Reconstituted2–8 °C

Certificate of analysis

Every box carries a batch number. Look it up and you get the analytical data for the exact vials you received.

Batch lookup →
Muscle & Anabolic Signalling

IGF-1 LR3

Long R3 IGF-I

An 83-amino-acid IGF-1 analogue engineered with an Arg3 substitution and a 13-residue N-terminal extension to greatly reduce IGF binding-protein affinity.

Research use only. This compound is supplied for laboratory research. It is not a medicine or supplement, is not approved for human use, and no dosing guidance for humans is offered here or by our team. Handle under appropriate laboratory conditions. Full disclaimer →

What the literature describes

Long R3 IGF-I was originally engineered for biopharmaceutical cell culture, where it is a more potent alternative to insulin in serum-free media. The Arg³ substitution and N-terminal extension sharply reduce binding to IGF binding proteins, extending free-fraction half-life relative to native IGF-1. The underlying IGF-1 literature reports hypertrophy driven by a combination of satellite-cell activation and increased protein synthesis in differentiated myofibres, with proliferative effects mediated through PI3K/Akt signalling and downregulation of p27^Kip1.

Available sizes & pricing

Prices in USD per sealed box of 10 vials. Bulk pricing available from 10 boxes — see wholesale.

Vial strengthBoxPrice
1mg 10 vials $442.40
$44.24 per vial
Order 1mg
100mcg 10 vials $81.20
$8.12 per vial
Order 100mcg

Published research

Links open peer-reviewed sources on PubMed. These are provided so you can read the primary literature yourself. Citing a study is not a claim that this compound is safe or effective for any use in humans.

Research areas

Lean Mass & Hypertrophy Research

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